1.

What is the correct order of hydration enthalpies of M^(2+) ions of first series?

Answer»

`Cr^(2+) gt Mn^(2+) gt Co^(2+) gt NI^(2+)`
`Ni^(2+) gt Co^(2+) gt Mn^(2+) gt Cr^(2+)`
`Ni^(2+) gt Co^(2+) gt Cr^(2+) gt Mn^(2+)`
`Cr^(2+) gt Mn^(2+) gt Ni^(2+) gt Co^(2+)`

Solution :HYDRATION enthalpy depends on CHARGE to radius RATIO


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